Your company has an Active Directory Domain Services (AD DS) domain. All servers run Windows Server 2008 R2. All client computers run Windows 7. You run Remote Desktop Services and Microsoft Virtual Desktop Infrastructure (VDI). You have the serve rs shown in the following table. You are configuring Remote Desktop Web Access (RD Web Access) to publish VDI desktops and r emote applications on the RD Web Access server. You need to ensure that when remote users log on to the RD Web Access server they are presented with all remote applications and only their assigned VDI desktop. Which two actions should you perform on Server 4?（）

• A、Set the source name to Server3.
• B、Set the source name to Server1;Server2.
• C、Select the option to use to one or more RemoteApp sources.
• D、Select the option to use a Remote Desktop Connect ion Broker server as the source.